A feasibility study grows fast: a usage for every unit type, a flow for every calculation, a layer for every context dataset, and a geometry for every scheme you test. A few habits keep that growth from slowing you down or muddying your data.
Project Cleanup: bulk-purge unused usages, flows, blocks, scenarios, properties, and empty draw layers in one click.
Improve Project Performance: project size limits, pausing the engine for bulk edits, and computation and rendering settings that trade detail for speed.
Keep the Layer Palette Tidy: remove layers you don't need so Giraffe has less to load and render.
Keep Properties and Usages Current: bring a standard usage back into an existing project without resetting everything.
Troubleshoot Projects: fix common errors, permission and validation blocks, and things that seem to have vanished.